Pith Number

pith:DBFDM6PQ

pith:2011:DBFDM6PQ32NWSMOUHJVJRVUOEZ

not attested not anchored not stored refs pending

About the Calabi problem: a finite dimensional approach

H. -D. Cao, Julien Keller

arxiv:1102.1097 v2 · 2011-02-05 · math.DG · math.AG · math.CV · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DBFDM6PQ32NWSMOUHJVJRVUOEZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:27:05.950623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

184a3679f0de9b6931d43a6a98d68e266d26c7e215c4d4e416879b69557c6895

Aliases

arxiv: 1102.1097 · arxiv_version: 1102.1097v2 · doi: 10.48550/arxiv.1102.1097 · pith_short_12: DBFDM6PQ32NW · pith_short_16: DBFDM6PQ32NWSMOU · pith_short_8: DBFDM6PQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DBFDM6PQ32NWSMOUHJVJRVUOEZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 184a3679f0de9b6931d43a6a98d68e266d26c7e215c4d4e416879b69557c6895

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08c10a19950ac2c0e90daf806dc0910979f9f9531cddf0415302ac9a667c28d8",
    "cross_cats_sorted": [
      "math.AG",
      "math.CV",
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-02-05T20:41:56Z",
    "title_canon_sha256": "c4a0acabb61a0ed9402775344e9e5593993fe0d78ed0e01c274e5a0f4288d065"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1097",
    "kind": "arxiv",
    "version": 2
  }
}